Roll-polisher.



A. I. MASKREY.

ROLL POLISHER.

APPLICATION FILED NOV-26, 1915.

1 1 86,0 1 7 Patented J une 6, 1916.

3 SHEET$-$HEET l- I .j igi 1.

2 avwento'c Hrfuz J 17115442541.

q vi/bnm Z, [5M 6M A. .l. MASK ROLL POLIS APPLICATION FILE I 1915. 1 I86 O17, Patented June 6,1916.

7 3 SHEETS$HEET 2- awuewtozfiz'ffiur (f/705K21 A. J. MASKREY.

ROLL POLISHER.

APPLICATION FILED NOV. 26. 1915.

1,186,017. Patented June 6,1916.

3 SHEETS-SHEET 3- sand 1 W a M afl owua ARTHUR J. MASKIBEY, 0F CANTON, OHIO.

ROLL-POLISHED.

Specification of Letters Patent.

Patented June 6, 1916.

Application filed November 26, 1915. Serial No. 68,380.

To all whom it may concern:

Be it known that I, ARTHUR J. MASKREY, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented a new and useful Roll- Polisher, of which the following is a specification.

My invention relates to improvements in roll polishers for polishing the rolls of rolling mills and the like and has more especial reference to a roll polisher of the character referred to, which is adapted to be connected to the mill, whereby the rolls at any or all times may be readily and easily cleaned, smoothed or trued by grinding away all roughness or foreign matter which frequently collects or adheres to the faces of the rolls.

The object of my invention is to provide a device of the above type which can be employed for polishing the rolls without interfering in any manner with the operation of the rolls, whereby the polishing may be effected while the mill is in operation.

A further object of the invention is to provide a device which may remain upon the housing of the mill at all times, and which comprises a plurality of independently movable polishing blocks adapted to be held in contact with the rolls.

A. further object of the invention is the provision of a device such as above referred to in which the center of the roll or any two portions equi-distant from the center may be independently polished or in which all portions of the surface of the roll may'be simultaneously polished as desired, the central polishing block and corresponding blocks at either side of the center being independently movable toward or away from the surface of the roll.

A further object is the provision of a device of this character in which different combinations of blocks may be held in contact with the surface of the roll as desired.

A still further object is the provision of a device by the use of which a larger output is obtained, owing to the fact that'the mill is never dismantled to grind or polish the rolls by hand as in the usual manner.

A still further object is a device of this character b the use of which the rolls may be left in t e mill all the week without the necessit of reducing the size of the sheets rolled t erein as the polishing blocks adjacent the ends of the rolls may during the most of the time be held in contact with the rolls to prevent the concavity of the rolls increasing by wear, said increase being usu-. ally greater in the center of the rolls than at the extremities thereof.

With these objects in view the invention consists in the novel construction and arrangement of parts, hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that various changes in the form. proportions, size and minor details of construction may be made within the scope of the appended claims, without departing from the spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings: Figure 1 is an elevation of a rolling mill, showing my improved polisher applied thereto. Fig. 2 is a section on the line 22, Fig. 1. Fig. 3 is a front elevation of the polishing blocks and the mechanism for operating the same. Fig. 4 is a transverse section on line 44, Fig. 3. Fig. 5 is a detail perspective view of one of the polishing blocks within its.retainer. Fig. 6 is a perspective view of a portion of the cam shaft, showing one of the cams thereon.

Similar numerals of reference indicate corresponding, arts throughout the several figures of the rawings.

Heretofore in the practical operation of rolling mills, and moreespeciall in the operation of sheet, tin and black-p ate mills the polishing of the rolls has constituted one of the most troublesome, vexatious and expensive problems.

The great cost of rolls and the care with which they must be made and used are fundamental facts of common knowledge to those skilled in the art. The rolls are so made as to produce the proper gage and quality of product when they are in actual, practical operation. When the rolls are cool the product is of inferior grade and uncertain gage and in order to produce rolled metal of uniformly high standard of quality it is desirable that the rolls be operated as continuously as possible so that t temperature thereof may remain substantially uniform. In use the finely polished surfaces of the rolls become scratched,

abraded and roughened. The demand of the trade is for a product having a smooth and even surface and in order to maintain the rolls in proper condition to produce such metal frequent polishings have been heretofore necessary. This polishing has commonly been accomplished by manually holding a large polishing block of carborundum or the like against the rolls, or by another device adapted to be permanently attached to the mill, whereby a rotary grinding wheel could be brought into contact with the rolls. With the first of these methods, however, it has been necessary to remove a part ofthe attachments belonging to the mill in order to make the rolls accessible for the polishing operation and the removal of these attachments, the polishing itself, and the subsequent assembling of the attachments preparatory to rolling requires considerable time. The rolls thus become cool, during this operation and the operation necessarily results in a very considerable economic loss for all concerned. Attention should also be called to the fact that. the product of mills so ground must necessarily be of unequal quality, for the product of the mill immediately after the polishing, when the surfaces of the rolls are in the best condition, is poor because the rolls are somewhat cooled. By the time the rolls have been heated by further working the surfaces have already become somewhat roughened and uneven and at the time the rolls are in the best condition as to temperature the surfaces of the rolls have already lost their hi h polish. As the work proceeds the sur ace of the rolls becomes more and more roughened and uneven, and the product, although produced on properly heated rolls at this pe riod becomes poorer and poorer in quality of surface until the point is reached where the rolls must, of necessity, be repolished. It is, therefore, plainly to be seen that by the method heretofore in use the product cannot possibly be of uniform quality.

By my invention I propose to remedy the above described unsatisfactory and undesirable condition by providing a polishing device which is constantly in operation, thus maintainin the surfaces of the rolls in uniformly perict condition at all times and obviating the necessity of discontinuing rolling for the purpose of polishing. Thus the rolls may be maintained at uniform temperature at all times by reason of their constant use and not only will the product be of uniform gage and quality of surface, but the economic loss incident to discontinuing rolling at frequent intervals will be avoided.

Referring more especially to the construction, illustrated in the drawings, the numerals 11 indicate the housings of a rolling mill of the usual construction. The numeral 2 indicates the upper roll and the numoral 3 the lower roll of the mills. All of these parts are of common and well known construction and require no further specific description.

Essentiall my invention comprises a plurality of po ishing blocks, any desired combination or all of which may be held in constant frictional contact with the surface of the roll, means being rovided for moving said polishing blocks into contact with or away from the roll, it being obvious that each of said blocks or any combinations thereof may be independently operated.

The same mechanism is provided for polishing the upper and the lower roll and therefore it is thought necessary to describe only one of these mechanisms as they are both constructed and operated the same.

The numerals 4 indicate short pins, fixedly connected to the housings of the mill and constituting studs upon which the polishing mechanism is supported. A pair of levers 5 are provided with notched lugs 6, the notches 7 therein engaging the pins 4, the pins thus forming fulcrums upon which the levers pivot. The lower portion of each lever is preferably bent downwardly at an angle as indicated at 8, and a plate 9 is carried between said lower extremities, said plate being provided at each extremity, upon its lower edge with a bearing 10 and with a plurality of spaced lugs 11 intermediate the extremities thereof, each of said lugs being provided with a half-round groove adapted to receive the shaft 12, said shaft being journaled in the bearings 10.

The retainers 13 within which the polishing blocks are carried are hingedly mounted upon the shaft 12, each of said retainers being provided with a dove-tailed groove 14 within which is mounted the polishing block 15 preferably dove-tail in form, a screw 16 being passed through a suitable screw threaded aperture in the back of the retainer, the extremity thereof being located within a socket 17 provided in the rear face of the polishing block, the head of said screw being preferably counter-sunk as shown in Fig. 4. Each of the retainers is provided upon its under face with a lug 18, an aperture 19 being formed thereth-rough by means of which the retainers are mounted upon the shaft 12. The ends of the retainers and polishing blocks are beveled as shown in Figs. 3 and 5, for the purpose of preventing seams or ridges being formed upon the face of the roll. A lug 20 provided with a curved face 21 is provided upon the upper edge of each of the retainers.

A bearing 22 is provided near each extremity upon the upper edge of the plate 9 and journaled within said bearings is a camshaft 23, spaced lugs 24 being provided upon the upper edge of said plate, said lugs 24 being provided with half-round sockets adapted to receive said cam shaft for the purpose of preventing any springing action thereof. A cam 25 is fixedly mounted upon the shaft 23 adjacent each of the lugs 20 and in position to contact with the curved face 21 thereof, said cams being connected to the shaft by means of set screws 26 or other suitable means.

A beveled pinion 27 is Rrovided upon one extremity of the cam-sha which pinion engages a similar pinion 28, which is mounted upon the shaft 29, said shaft being ournaIed in suitable bearings 30 provided upon one of the levers 5. A dial 31 is provided at the upper end of the lever 5. which carries the shaft 29, said dial being fixedly connected to said lever and the extremity of the shaft 29 passes through said dial and is provided with a hand or pointer 32 adapted to move over the face of said dial, the extremity of the shaft 29 being provided with a'squared portion 33 to which may be applied a wrench 33" or other suitable tool for thepurpose of rotating the shaft when desired.

An off-set portion 34 is provided at the upper extremity of each of the levers 5, each of said ofi-set portions being provlded with a slot 35 adapted to receive the screw threaded stem 36, to which stem is connected a coil spring 37, the lower extremity of each spring being attached to a bracket 38, which is mounted upon the housing. Upon the upper screw threaded extremity of 'each stem 36 is provided a wing-nut 39 for'the purpose of adjusting the tension upon the levers.

The springs 37 hold the polishing blocks or any desired combination of said blocks, constantly in engagement with the peripheral surface of the roll. After thecentral portion of the roll has been sufiiciently polished the two outside blocks are placed in contact with the roll for the purpose of continually grinding and polishing the peripheral surface adjacent each extremity of the roll in order to reduce the concavity of the roll. It will be understood that the continual passing of sheets through the rolls during the operation of the mill slowly increases the concavity of the roll and it is for the purpose of reducing this concavity of the roll that the polishing blocks at each extremity of the roll should be kept in contact with the roll as much as possible since the sheets rolled between rolls having any considerable concavity will be thicker through their longitudinal centers than at their edges. When it is desired to polish the entire surface of the roll the cam shaft may be so moved that all of the cams are brou ht out of engagement with their respective lugs, thus holding all of the polishing blocks in alinement. The springs 37 upon the extremities of the levers 5 will thus throw all of the polishing blocks into contact with the surface of the roll. When it is desired for any reason to discontinue polishing of a roll or to move the polishing blocks out of engagement with the roll in order to repair a mill or replace a roll therein, the wing-nuts 39 may be loosened, releasing the tension of the springs 37 upon the levers 5, the weight of the polishing mechanism at the lower extremities of the levers causing the same to swing-into a position to bring the polishing blocks out of contact with the roll.

By constructing the levers 5 as shown with the slots 7 for the purpose of engaging the pins 4 upon-the housings, it will be seen that in the event of an accident to the mill, if one of the rolls isdisplaced or broken it will not be likely to damage the polishing device, but will tend to throw the levers out of engagement with the pins 4, allowing the polishing device to fall clear of the roll.

It will be understood, of course, that the cams 25 may be placed in any desired position upon the cam shaft 23 in order to operate any one polishing block or any desired combination thereof independently of the remaining blocks. As shown in the drawings, especially in Figs. 3 and 4 the central polishing block is adapted to be operated independently of the remaining blocks, the block at each side of the central block will be operated in unison and the two end blocks will be operated in unison.

Although the drawings and above specifi-' (mtion disclose the best mode in which I have contemplated embodying my invention I desire to be not limited to the details of such disclosure, for, in the further practical application of my invention, many changes in form and construction may be made, as circumstances require or experience suggests, without departing from the spirit of the invention within the scope of the appended claims.

I claim 2*- 1. A roll polisher for a rolling mill adapted to polish the surface of a roll during the operation of the mill, said roll'polisher comprising in combination with said roll, a plurality of polishing blocks mounted upon a frame and individual means for moving one or moreof said blocks into engagement with the roll.

2. A roll polisher for a rollin mill adapted to polish the surface of a r0 1 during the operation of the mill, said roll polisher comprisin in combination with said roll, a,

polishin lock formed of sections mounted upon a rame, each of said sections provided with beveled edges andindividual means for moving one of said sections or different desired combinations of said sections into contact with the roll.

3. In a roll polishing device in combination with a rolling mill, a pair of levers pivoted u on the housings of said mill, a shaft carrie between the lower extremities of said levers, a plurality of polishing blocks pivotally mounted upon said shaft and means for moving one of said polishing blocks or different desired combinations of polishing blocks into contact with the face of the roll.

4. In a roll polishing device, in combination with a rolling mill, a shaft heldin proximity to the roll, a plurality of polishing blocks loosely mounted upon said shaft and individual means for moving one of said polishing blocks or difi'erent desired combinations of said polishing blocks into engagement with the peripheral face of the roll.

5. A roll polishing device for a rolling mill, comprising in combination with a roll, a frame located adjacent the peripheral face of said roll, a plurality of polishing blocks pivotally mounted on said frame and means for independently moving one of said polishing blocks or different desired combinations of said polishing blocks into contact with the surface of the roll.

6. A roll polishing device for a rolling mill, comprising in combination with a roll, a frame located adjacent the peripheral face of said roll, a plurality of polishing blocks pivotally mounted on said frame, and individual cam-s arranged to move said polishing blocks, independently of each other, into. contact with the peripheral surface of said roll.

7. A roll polishing device for a rolling mill,-comprising in combination with a roll, a frame located adjacent the peripheral face of said roll, a plurality of polishing blocks pivotally mounted on said frame, a cam shaft mounted upon said frame, individual cams adapted to engage said polishing blocks for the purpose of independently moving said polishing blocks-into engagement with the peripheral surface of said roll and means for rotating said cam shaft.

8. In a roll polishing device, in combination with a rolling mill, a pair of levers pivoted upon the housings of said mill, a plate carried between the lower extremities of said levers, a plurality of polishing blocks pivotally mounted upon said plate and means for moving one of said polishing blocks or different desired pairs of polishinglgl blocks into contact with the face of the r0 9. In a roll polishing device, in combina-' tion with a rolling mill, a pair oflevers pivoted upon the housings of said mill, a

plate carried between the lower extremities of said levers, a plurality of polishing blocks pivotally mounted upon said plate, a cam shaft rotatably mounted upon said plate, a plurality of cams mounted upon said cam shaft and arranged to engage said polishing blocks, said cams being so arranged upon Said shaft that they will independently move one of said polishing blocks or different desired combinations of said polishing blocks into contact with the face of the roll and.

pivotally mounted upon said plate, a cam shaft rotatably mounted upon said plate, a plurality of cams mounted upon said cam shaft and arranged to engage said polishing blocks, said cams being so arranged upon said shaft that they will independently move one of said polishing blocks or different desired combinations of said polishing blocks into contact with the face of the roll, a shaft carried upon one of said levers, means operatively connecting said shaft to said cam shaft and an indicator provided upon the shaft upon said lever,

11. A roll polisher for a rolling mill adapted to polish the surface of the roll during the operation of the mill, said roll polisher comprising in combination with said roll, a plate located adjacent said roll, a plurality of retainers pivotally mounted upon said plate, each of said retainers provided with a dove-tailed groove, a dovetailed polishing block located within the groove in each retainer, a cam shaft rotataly mounted upon said plate, a plurality of cams mounted upon said cam shaft, each of said cams adapted to independently engage the adjacent retainer, said cams being arranged to individually operate one of said retainers, or a desired combination of said retainers, independently, bringing the accompanying polishing block or blocks into contact with the surface of the roll and means for rotatingsaid cam shaft.

12. A roll polishing device for a rolling mill, comprising in combination with a roll, a plate located adjacent the peripheral face of said roll and beneath the longitudinal axis of said roll, the upper edge of said plate being inclined away from said roll, a plurality of polishing blocks hingedly connected to the lower edge of said plate and adapted to normally rest upon said plate and individual means for independently moving one of said polishing blocks or a desired combination of said polishing blocks into contact with the peripheral face of the roll.

13. A roll polishing device for a rolling mill, comprising in combination with a roll, a plate located adjacent the peripheral face of said roll and beneath the longitudinal axis of said roll, the upper edge of said plate being inclined away from said roll, a plurality of polishing blocks hingedly connected to the lower edge of said plate and adapted to normally rest upon said plate, a cam shaft journaled upon the upper portion of said plate, a plurality of cams providedupon said cam shaft, each of said cams be ing arran ed to engage one of said polishing blocks, said cams being so located that they will independently move one of said polishing blocks or a desired plurality of polishing blocks into engagement with the peripheral surface of sald roll.

14. A roll polishing device for a rolling mill, comprising in combination with a roll, a plate located adjacent the peripheral face of said roll and beneath the longitudinal axis of said roll, the upper edge of said plate being inclined away from said roll, a plurality of retainers hingedly connected at the lower edge of said plate, a polishing block carried in each of said retalners, a curved face provided upon the rear of each of said retainers, a cam shaft journaled near the upper edge of said plate, a plurality of cams provided upon said cam shaft and adapted to engage the curved faces of said retainers, said cams being so arranged u on said cam shaft with relation to each 0t or that a rotation of said shaft will move one of said polishing blocks or a desired plurality of said polishing blocks into engagement with the peripheral surface of the roll and means for rotating said cam shaft when desired.

In testimony that I claim the above, I have hereunto subscribed my name.

ARTHUR J. MASKREY. 

